Systems and methods for mitigating vibrations
Various embodiments of the present disclosure disclose mitigating internal and external vibrational disturbances in opto-fluidic instrument. In various embodiments, the resonance frequency ranges and/or the vibrational frequency ranges of various modules and components of the opto-fluidic instrument may be selected to avoid resonances from occurring in the opto-fluidic instrument, thereby mitigating vibrations from internal and external sources that may distort the imaging of samples in the opto-fluidic instrument.
1 . A system comprising:
a cooling system configured to vibrate at one or more frequencies within a vibrational frequency range (VFR) when the system is in operation;
an optics module including an optical frame having a camera, an illumination module, and an X-Y stage mounted thereon, the optical frame having a first resonance frequency within a first resonance frequency range (RFR); and
a chassis onto which the cooling system and the optical frame are mounted, the chassis configured to couple to a chassis vibration isolation device (a) configured to isolate the chassis from an external environment and (b) having a second resonance frequency within a second RFR, wherein:
for a first frequency range selected from (i) the first RFR, (ii) the second RFR, and (iii) the VFR, that has higher peak frequency than a second frequency range that is different from the first frequency range and is selected from (a) the first RFR, (b) the second RFR, and (c) the VFR, a lower frequency range limit of the first frequency range is greater than a higher frequency range limit of the second frequency range by at least a factor of N>2.
2 . The system of claim 1 , further comprising: the chassis vibration isolation device.
3 . The system of claim 1 , wherein the optical frame includes an optical frame vibration isolation device configured to couple the optical frame to the chassis and shift a natural resonance frequency range of the optical frame to the RFR.
4 . The system of claim 1 , wherein the chassis vibration isolation device is a semi-active pneumatic vibration isolator.
5 . The system of claim 1 , wherein the VFR ranges from about 50 to about 100 Hz.
6 . The system of claim 1 , wherein the first RFR ranges from about 10 Hz to about 20 Hz.
7 . The system of claim 1 , wherein the second RFR ranges from about 1 Hz to about 2 Hz.
8 . The system of claim 1 , wherein N is in the range from about 2 to about 3.
9 . The system of claim 1 , wherein N is in the range from about 5 to about 15.
10 . The system of claim 1 , wherein N is in the range from about 20 to about 40.
11 . The system of claim 1 , wherein the first RFR and the second RFR are such that the X-Y stage experiences a vibrational displacement amplitude that is less than a threshold displacement amplitude when the system is in operation in an international standards organization (ISO) operating theatre environment.
12 . The system of claim 11 , wherein the threshold displacement amplitude is about 100 nm.
13 . A system for dampening vibrations, comprising:
a first module configured to vibrate at one or more frequencies within a vibrational frequency range (VFR) when the system is in operation;
a second module including a frame and a stage mounted on the frame, the frame having a first resonance frequency within a first resonance frequency range (RFR); and
a vibration isolation device having a second resonance frequency within a second RFR, wherein:
for a first frequency range selected from (i) the first RFR, (ii) the second RFR, and (iii) the VFR, that has higher peak frequency than a second frequency range that is different from the first frequency range and is selected from (a) the first RFR, (b) the second RFR, and (c) the VFR, a lower frequency range limit of the first frequency range is greater than a higher frequency range limit of the second frequency range by at least a factor of N>2; and
the factor N is such that the stage experiences a vibrational displacement amplitude that is less than a threshold displacement amplitude when the system is in operation.
14 . The system of claim 13 , wherein the first module includes a cooling system.
15 . The system of claim 13 , wherein the second module includes an optical module containing optical components of the system.
16 . The system of claim 13 , further comprising a chassis onto which are mounted the first module and the second module, the chassis configured to couple with the vibration isolation device.
17 . The system of claim 13 , wherein the vibration isolation device is a semi-active pneumatic vibration isolator.
18 . The system of claim 13 , wherein the VFR ranges from about 50 to about 100 Hz.
19 . The system of claim 13 , wherein the first RFR ranges from about 10 Hz to about 20 Hz.
20 . The system of claim 13 , wherein the second RFR ranges from about 1 Hz to about 2 Hz.
21 . The system of claim 13 , wherein N is in the range from about 2 to about 3.
22 . The system of claim 13 , wherein N is in the range from about 5 to about 15.
23 . The system of claim 13 , wherein N is in the range from about 20 to about 40.
24 . The system of claim 13 , wherein the threshold displacement amplitude is about 100 nm.